On 23 July 2012 20:17, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > On Mon, 23 Jul 2012, Sarbojit Ganguly wrote: > >> Hello Daniel, >> >> That is why I provided two stacks, >> >> 1st one is when I tried to remove the USB hub (which connects a webcam >> + microphone) >> 2nd one is when I tried to remove an USB powered external HDD. >> >> Just to make sure whether the problem is with USB sound or the USB subsystem. > > Do you stop all the programs that are using the USB devices before > unplugging the hub? Do you unmount the USB HDD first? Yes Alan, I did unmount the HDD > > The first crash shows a problem in the snd-usb-audio driver. > > The second crash shows a problem in the VFS layer or in ext3, not in > the USB stack. Yes the issue is in evict() api which gets called when USB disconnect is triggered. > > Alan Stern > Even I was confused in the beginning but after thorough check I confirmed its presence. I reverted back to my distro's stock kernel (3.2.0-26-generic) where the issue does not recur. I could not analysed further (due to my limited knowledge of USB). -- Regards, Sarbojit -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
